<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom"> 当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                            <div class="button">{{this.city}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom"> 热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hot" :key="item.id " @click="handleCityClick(item.name)">
                            <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom"> {{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" v-for='innerItem of item' :key="innerItem.id" @click="handleCityClick(innerItem.name)">
                        {{innerItem.name}}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import {mapState,mapMutations} from 'vuex'
export default {
    name:'CityList',
    props:{
        hot:Array,
        cities : Object,
        letter:String
    },
    computed:{
      ...mapState(['city'])
    },
    mounted(){
        this.scroll= new Bscroll(this.$refs.wrapper)
    },
    methods:{
      handleCityClick (city){
        // this.$store.dispatch('changeCity',city)
        // this.$store.commit('changeCity',city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    watch:{
      letter(){
        if(this.letter){
          const element = this.$refs[this.letter][0]
          // console.log(element)
          this.scroll.scrollToElement(element)
        }
      }
    }
}
</script>

<style lang="stylus" scoped>
//   @import '@/styles/varibles.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
    .button-list
      overflow: hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        float: left
        width: 33.33%
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        padding-left: .2rem
</style>

